html,
body {
    margin: 0;
    padding: 0;
}

body {
    background-color: #ccc;
    padding: 15px;
}

.layui-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#form_add {
    padding: 20px 30px 0 0;
}

#form_edit {
    padding: 20px 30px 0 0;
}